694: GASTROPODA. [Pulmonata. 



Dentition. Suter, T.N.Z.I., xxiv, 299, pi. 23, f. 49, 50 ; Pilsbry, 

 Man. Conch. (2), ix, pi. 8, f. 5, 6. 



Jaw membranous, vertically distantly striated. 



Radula with the formula 10 + 4 + 1 + 4 + 10. The central and 

 first lateral teeth are relatively large, otherwise the teeth are normal. 



Type in my collection. 



Hob. North Island : Forty-mile Bush, type (H. S.) ; Waimarama. 

 South Island : Kenepuru (McMahon) ; Greymouth. 



7. Endodonta minuta, Suter, 1909. Plate 27, fig. 9. 



Endodonta (Ptychodon) minuta, Suter, Subantarct. Islds. N.Zeal., i, 1909, 

 38, pi. 1, f. 15. 



Shell minute, discoidal, thin and fragile, radially costate, umbili- 

 cated. Sculpture consisting of fine sharp equidistant and flexuous 

 thread-like riblets, about 30 per millimetre ; the interstices with 

 fine growth-lines ; there is no spiral sculpture. Colour yellowish- 

 white, with distant narrow radial brown streaks, not extending below 

 the periphery on the last whorl. Epidermis thin, slightly shining. 

 Spire flat, not elevated above the last whorl. Protoconch flat, rather 

 large, of 1J smooth and lightly convex whorls. Whorls 3-|-, regularly 

 increasing, moderately convex, the last rounded at the periphery and 

 base. Suture impressed. Aperture lunar, oblique, much excavated by 

 the parietal wall ; the outer wall with 8 long thin spiral lamellae, the 

 lowest two closer together, and the three uppermost inconspicuous ; 

 no lamellae on the parietal wall and columellar lip. Peristome simple, 

 thin, sharp, regularly rounded. Columella short, vertical, arcuate, 

 very little reflexed. Umbilicus wide, perspective, about one-third of 

 the greatest diameter. 



Diameter, 1-4 mm. ; height, 0-7 mm. 



Animal unknown. 



Type in the Canterbury Museum, Christchurch. 



Hob. Campbell Island ; one specimen (W. K. Chambers). 



Remarks. The specimen is not adult, and it is possible that 

 lamellae on the parietal wall and columellar lip appear only at a later 

 stage of growth. The numerous slender lamellae on the outer wall 

 induce me to class it for the present under Ptychodon. 



8. Endodonta pseudoleiodon, Suter, 1890 (em.). Plate 27, fig. 10, a-c. 



Helix pseudoleioda, Sut., T.N.Z.I., xxii, 1889 (1890), 221, pi. 14, f. 1, OT-C,. 

 Patula (Maoriana) pseudoleioda, Sut. : Pilsbry, Man. Conch. (2), viii, 

 88, pi. 24, f. 40-43. Endodonta (Ptychodon) pseudoleioda, Sut. : Hedley 

 and Suter, P.L.S. N.S.W. (2), vii, 652 ; Suter, J. de Conch., xli, 259. 



Shell minute, depressed globose, radially ribbed, perforate, thin, 

 faintly shining. Sculpture consisting of close fine sinuous radial rib- 

 lets, about 15 per millimetre, finer and closer together on the proto- 

 conch ; interstices with microscopic growth-lines and crowded spiral 



